Battery charger



FIG. 1 is a front view of the battery charger;

FIG. 2 is a left side view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a perspective front view (closed position) thereof;

FIG. 8 is a perspective front view (open position) thereof;

FIG. 9 is a perspective front view (open position) thereof; and,

FIG. 10 is a perspective rear view (open position) thereof. 

Applicant claims the ornamental design for a battery charger, as shown and described. 